X x x x x



1. (a. E. HINKLE,

ANESTHETIC MACHINE.

APPLICATION FILED NOV. 12. 1914.

Patented Aug 5, 191.9.

2 SHEETS-SHEET 1.

J. a, E. HINKLE. ANESTHETIC MACHINE.

APPLICATION FILED NOV. 12. I914.

Patented Aug. 5; 1919.

2 SHEETS-SHEET 2 rona'rnait o. n. HINKLE, or nnrnaivv, iurssounr.

' ANESTHETIC-MAGHINJE.

To all whom it may concern:

Be it known that L'JONATHAN G. E. Hrnnme, a citizen of the United States, re-

siding at Bethany, in thecounty of Harri son and State of Missouri, have invented new and useful Improvements in Anesthetic- Machines, of which the following is a specifi I cation. p

My invention relates to an anesthetic machine and has as its principal object the pro- I vision of an apparatus by which one may prepare an anesthetic gas of known strength.

and may maintain the same under perfect control, thereby making an anesthetic safer and getting better results, than now obtained.

A second object provide an apparatus whereby the operator may combine the vapors of. chloroform, ether I vide an apparatus which will turnishthe pa-. tient with a gas containing the normal amount of vorygeh thereby supporting life at a a of parts hereinafter described.

All

and somnoi'orm or givethem separately.

A third object of my invention is to proin a normal way. A tourth object or my invention is to pro vide an apparatus whereby a patient may be 1 put into the analgesic state and kept there as on g as desired. a

A final object of my invention resides in use in carrying out my invention.

Fig. 3 1s a top plan view of the inhaler shown in Fig. 2, the mouth piece being removed. i a

Fig. A is a bottom plan view of the inhaler shown in Fig. 2, the mouthpiece being removed.

Fig. 5 is a has r e... portionof the apparatus shown in Fig. l.

Fig. 6 is a modified form of the inhaler for use in carrying out my invention."

Fig.7 is a detail view, partly in section, or a Fig. l.

. Fig. 8 is a detail, partly in section, cat a modified form of inhaler for nose and throat work.

Fig. 9 is a modified form of support for of my invention is to portion of the apparatus shown in Specification of Letters Patent. Patented Aug... 5, 1919.. Application filed November 12, 1914. Serial Ito. 371,736.

use in connection with the apparatus shown in Fig. 1.

Fig. 10 is an .elevational view of the pie ferred form of face piece for my inhaler.

Throughout the separateviews the same part is designated by the same reference character. 1

Referring more. particularly to the drawlng, 1 is a tank forflcontaining the liquid chloroform or ether, or a mixture of the two. 7 -The bottom of the tank has a conical shape as indicated at 2, and is fitted with a drain 'Gock'3 atthe lowermost point of the bottom.

The top of the tank 1 is provided with an in .let for liquid normally closed by afscrew threaded plug such-as t. Sis a pipe pro jecting upwardly from the top of the tank 1 and extending through the top of thetank into its interior for a purpose which will be described later. a r

At'the upper end of the pipe 5 is anelbow G'wh'ichis connected to a T 7 one leg of which is connected to a suitable source of com pressed air, such as a foot bellows, or an electrio fanor pressure tank, whichever is best 1 suited to the Operators condition. y The pipe 5 extends downwardly through the top of the tank and parallel with the vertical sides thereof for some distance, whereupon it is given two right angle bends as clearly indicated in dotted lines in Fig. 1, the upper with a small end of the pipe being provided opening indicated at 9.

Suitably attached to the pipe within the tank 1, as indicated at 10-l0, is a liquid tube 11 which is arranged vertically, and the lower end of which dips into the liquid in the tank. The upper end of the tube 11 is turned horizontally as indicated at 12 so that air delivered through the pipe 5 will fiowacross the end of the tube 11. drawing tlli up liquid therethrough and efiectuallynebulizing such liquid to form a aturated vapor or chloroform or ether inthe tank 1.

it will be seen that the tank 1 is rela "tively large so as to provide a large volume or space above the level of the liquid where .by the -:anesthetic' vapor which may pass never contain particles of liquid'anesthetic,

out from the tank, although saturated, will although the outlet of the tank is entirely unobstructed and tree from any gauze or other material which might impede the free flow of the vapor to the patient. In this way, the normal breathing of the patient is not interfered with, but a solution of t a I anesthetic vapor in air is, nevertheless, furnlshed continuously through the connection leading to the patient which is always saturated'without danger of its being supersaturated.

Leading out of the top of the tank 1 is V a nipple 12' for taking-off anesthetic gas to the place of use. The nipple 12' is connected at its upper end to an angle valve 13, the other end of which is connected by means of a nipple 19 toone leg of a 14. Connectin the T 7 to the T 14 is a by-pass comprlsing an elbow 15, nipples 17-17 and a valve 16. It will be obvious that by closin the valve 13 and opening the valve 16, air rom the pipe 8 may be passed around the tank'l, which this may be desirable will be explained more fully below.

Leading from the side of the T 14 opposite the valve 13, extends a piping connection comprising a number of nipples 19-19 which are suitably connected by means of elbows 18-18 and T 20 so as to form with the T 14 andnipple 19, a horizontal U two sides of which are parallel to the direction of the nipple 17. Connected to the T 20 is a short pipe connection which leads to an oxygen flask 21. The flask 21 is shown as provided with the usual needle valve 22 and a set screw 23. Adjacent the flask 21 is a rubber bag 24 which connects withthe same pipe as the flask 21 and which serves to reduce the pressure of the gas admitted to the T 20. Intermediate the rubber bag 24, and the T 20 I- place also a valve 25 by which the flow. of oxygen may be regulated.

By the arrangement just mentioned I am able to preserve the normal amount of oxygen in the gas flowing through the inhaler. At the mouth of the gas bag 24 I also provide a valve 24 by which the bag can be cut'ofi from the remainder of the system when so desired.

Connected to that one of the nipples 19 farthest removed from the valve 16 is a cross 26 to one branch of which is connected a gas bag'27 and" to the other branch of which is connected a somnoform capsule container and breaker 28, which are shown .in detail in Fig. 7 .7

The capsule breaker comprises an oute tube 29 which contains a lint chamber 30 formed by a wire netting. The lint chamber 30 has a collar'32 which is designed to rest on the collar 33, which collar is fixed to the inside of the tube 29. A capsule such as 34, contalning somnoform or the'like, is

supported within thetube 29 by an inwardly projecting portion 35.

I provide a close fitting cap 34' which fits over the upperend of the tube 29 and which may be pressed down over the upper end of the tube 29 so as to force a capsule such as 34 against the end portion of 35 capsule.

The conditions under so as to break the capsule. I also provide a breaker rod 36 which extends throu h the side of the tube 29 and which may e used for this purpose, being normally held 'out by spring'37. Above the collar 33, the tube 29 is provided with a wire gauze 31 soldered 'to its interior for the purpose of catching an particles of glass from the A ter the capsule is broken, the liquid contained therein is held by the lint in the chamber 30 so that it does not run down into the cross 26 but will give 011 vapor to the air passing through the cross as necessary. It will be seen that I also provide a valve 38 so that the bag 27 may be cut off from the pipes entirely.

1 Connecting with the cross 26 is a nipple 39 to which nipple is connected a hand operated valve or turning plug 39 which may be opened or closed by the handle 40 to govern-the flow of gas to the -nipple 41 which connectsto a check valve 42 containing a pivoted flap valve 43 to prevent back flow of the gas. Valve 42 connects to a nipple 44 which is connected to the inhaler by means of a-silk covered hose 45.

, -My improved inhaler comprises a casing such as 46 to the'upper portion of which is attached a nipple 47 for attachment to the hose. Within the nipple'47 is a ball 48 which is arranged to cooperate with a seat such as provided with another aperture 54, an air tube 55 which passes'up through the chamber 51 being directly connected to the aperture 54, while the aperture 53 serves to allow gas to pass from the nipple into the chamber 52. In order to regulate the percenta e of air and gas flowing into the mixing clamber 52, Iprovide 'a valve disk 56 which is similar in shape to the disk 50 and which is mountedevenly below 50 being carried at the end of a stem 57, at the outer end of ,which is a pointer or handle 57. It will be understood that the valve disk 56 is provided with two apertures arranged to co.- operate with the apertures 53 and 54 in such a manner that when one of the apertures in 50 is opened, the other is closed a proportionate amount. Thus when aperture 53 is fully open the aperture 54 is fully closed.

Moreover, the stem 57 is rovided with an indicating needle 57 which coiiperates with graduations 58 on the top of the casing 46 which indicates the amount of opening of aperture 53' and the degree of closure of aperture 54, by which the percentage of gas passing into the vapor may be determined.

- face of the patient is provided with a rubber intent-r Opening out of the chamber 52 is a short tube 59, the sides of which are perforated as shown at 60 and within which is a light disk valve, (not shown), which when the patient exhales, will lift so as to permit his breath to pass out through the'apertures 60 but which, when he inhales, will drop down so as to close communication between the apertures and the inner portion of; thetube the mixing chamber.

61 is a face piece of su-li'cient size go over both the mouth and nose of the patient and to which is attached a ring 62 which connects to the mixing chamber-52 by means of a threaded j'lI1lS,flS shown. It Will be understood that the ring 62 may connect.

and disinfected.

with the body of the inhaler by means 'ofa slip joint, if so desired. The face iece 6 1 carries within it a wire screen suc and around the edge, which goes against the ring. 64 which may be inflated so as to make 3'0 n-ated as a Whole by the reference number 67.

did

the best possible contact with the face of the patient, the inflation being controlled through the air valve 65. f

In place of the face piece 61, however, I may use a soft rubber nose piece.

lln Fig. 6 have shown another modification of an inhaler, which I have desigln most of its features the inhaler 67 is identical with the form previously described, and in such features it is identically numbered. The inhalerfo'l, however, is intended to be used in connection with the nose only of the patient and for this purpose, the body of the inhaler is provided with a head a band 66, arranged to' hold the inhaler proper rid dlt

in correct position onthe forehead. 68 68 are nasal tubes made of hard rubber or other suitable material and connected to a metal cap 69 by means of soft rubber tubes 70-70, the cap 69 affording means for holding the tubes -68 and 70 to the body of the inhaler by slipping over and fitting tightly on the end thereof. i

ln Fig. 8 l have shown a .cap 78 which may be used with the inhaler 67 in place of the cap 69. The cap "F8 is provided witha singlehook'79 thereon which is to be used in nose and throat work.

lt will be seen that l have illustrated my apparatus as supported from a base 71 which is connected at 2 to a hollow pipe or standard 73 which carries. at its upper end a set screw 74. for the purpose of holding the tube 75, which is slidable within the member 73, in any desired position. At its upper end the tube 75 is fixed to the "l" 20, bein shown'as integral therewith.

W ere circumstances make it preferable, ll ma substitute for the member 75 a rod arranged to be heldin a soclret such as 83 which 1 is formed integral with a vise or clampd l, a set screw 85 being provided for holding the ball BQand rod 81 in adjusted tening the fingers 86 to the table. 59 so as to prevent the entrance of a1r into 1 Referring to Fig. 101 have shown therein my preferred form of face iece comprising acap 78 which is designs to fit on a casing such as46 or 67 and a resilient rubber screen 67' which can be made in any size desired so as to fit over the nose or over both the nose and mouth of the patient.

Such arubber screen can beeasily cleaned .1. In an anesthetic machine in combina tion, means for forming a saturated solution of anesthetic vapor in alr, means for br1nging the oxygen contents of said solution to its normal percentage for breathing, means for supplying a regulated amount of air under pressure to said solution prior to the addition of said oxygen, and means for supplying the resulting mixture toa patient.

2. n an anesthetic machine in combination, means fbr preparing a solution of an anesthetic gas in air and means for adding to saidsolution the vapor of somnofform or ice the like, comprising a substantiallyhorizonanesthetic vapor, and a valved by-pass between said ipe and said connections whereby air may e delivered into said connections without passing through said means.

a. lln ananesthetic machine in combina' tion, a tanlr for holding an anesthetic liquid,

a nebulizing apparatus disposed in said tank a for producing an anesthetic solution of re or in air, connections for leading said soution to a patient, a check valve in said connections, a stop valve in said connections,

and a pipe connection leading into said con nections ata point between said checlr valve and said step valve, an oxygen flask con nected with said pipe connection, and a valve for controlling the delivery of oxygen from said flash.

. 5.. in an anesthetic apparatus, an inhaler tal pipe through which the. anesthetic gas lllli lllll lilli ltd ltd

comprising a casing, said casing having a disk forming the head of a mixing chamber, said disk having two apertures therein, a connection for introducing anesthetic gas through one of said apertures into said chamber, an air tube for supplying air to the other one of said apertures,-and an apertured valve disk mounted adjacent said disk, said valve disk being so arranged that'- the flow of gas into the chamber through said connection is inversely proportional to the flow of air through said tube at any given time.

6. In an anesthetic apparatus, an inhaler comprising a casing, said casing having a disk forming the head of a mixing chamber, said disk having two apertures therein, a

connection for introducing anesthetic gas through one of said apertures into said chamber, an air tube for supplying air to the other one of said apertures, and an apertured valve disk mounted adjacent said disk, said valve being Ber-arranged that the flow of gas into the chamber through said connection is inversely proportioned to the flow of air through said tube at any given time, a rod connected to said valve disk extending through said head, and a pointer on the outer end of said rod to indicate the position of said valve disk.

7. In an anesthetic machine in combination,- means for forming a solution of anesthetic vapor in air, a pipe for supplying pressure air to said means, connections for leading said solution to a patient, and a valve bypath between said pipe and the said connection so arranged that air may be delivered into, said connection Without passing through said means and while said vay por forming means is in action.

In testimony whereof I alfix my signature in the presence of two witnesses.

JONATHAN G. E. HINKLE. Witnesses:

HAZEL BALLARD, 1

Qowm M. SWITZER. 

